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Mainframe z/OS Developer (Remote):

Marathon TS

Role overview

Qualifications

  • 8+ years of hands-on experience with COBOL programming on IBM z/OS
  • Proficiency in JCL, VSAM, DB2, IMS, and CICS
  • Experience in mainframe migration projects or modernization initiatives
  • A degree from an accredited College/University in the applicable field of services

Responsibilities

  • Develop and maintain COBOL programs on IBM z/OS
  • Engage with mainframe integration and migration planning
  • Utilize mainframe communication tools and security protocols
  • Collaborate effectively with team members and stakeholders

About the company

Marathon TS logo

Marathon TS

Information Technology & Services

Company details

Company typeSME
IndustryInformation Technology & Services

Links

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Job description

Mainframe z/OS Developer (Remote):

Description:
Required
• 8+ years of hands-on experience with COBOL programming on IBM z/OS.
• Proficiency in JCL, VSAM, DB2, IMS, and CICS.
• Experience in mainframe migration projects or modernization initiatives is preferred.
• Familiarity with mainframe communication tools such as CICS and mainframe security protocols, including RACF.
Technical Skills
• Must be proficient in JCL, COBOL, VSAM, and CICS.
• Strong knowledge of batch processing and online transaction processing.
• Must have experience with IBM utilities, TSO/ISPF, and Abend-AID.
• Experience with Control-D, Control-M, File-AID
• Knowledge of best practices in mainframe migration planning, including risk assessment and resource management.
• Familiarity with AI/ML tools (CoPilot, WatsonX, ReDux, others) for code analysis, pattern recognition, or modernization support.
• Understanding of AI-driven code refactoring platforms/products and the ability to leverage AI to improve testing, documentation, and process optimization.
Soft Skills
• Strong analytical and problem-solving abilities.
• Effective verbal and written communication skills, especially for collaborating on mainframe integration with Java developers and migration planning.
• Ability to work independently and in a team environment with a focus on quality and attention to detail.
Preferred
• Experience with DevOps practices on mainframes, including tools like Jenkins and Git.
• Prior experience with performance tuning on mainframe systems
• Prior experience with ServiceNow

Additional Required Skills/Experience:
o A minimum of Eight (8) years' relevant experience.
o A degree from an accredited College/University in the applicable field of services is required. If the individual's degree is not in the applicable field then four additional years of related experience is required.
o Typically performs all functional duties independently.
o Note: Special credentials (licenses and/or certifications) may be required at the Task Order level on a case-specific basis."

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Marcus Rivera

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